Oregon inside linebacker Casey Matthews has high hopes of matching the pedigree of his surname as an NFL player. Unfortunately, he no longer can use the NFL Scouting Combine to show general managers and coaches just how good he can be.

Matthews was unable to work out Monday after sustaining a shoulder injury while doing his bench-press repetitions Sunday, according to the NFL Network. It has been reported to be a subluxation, or a partial dislocation of the joint.

In most cases, such ailments don't require surgery but it's unknown if Matthews can fully rehabilitate in time to work out at his scheduled on-campus pro day in just 11 days.

Matthews is the younger brother to Packers All-Pro outside linebacker Clay Matthews III. He's the grandson of Clay Matthews Sr., who played defensive end in the 1950s. His father, Clay Matthews Jr., played 19 seasons as an NFL linebacker. His uncle, Bruce Matthews, is a Hall of Fame offensive lineman. And his cousin, Kevin Matthews, was a Titans rookie center last season.